package xyz.zhzby.cyzx.servicebase.utils;

import io.swagger.annotations.ApiModel;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * @author zby
 * @date 2021/12/06
 */
@ApiModel("加密工具类")
public class MDUtil {

    public static String encryption(String s) {
        char[] hexDigits = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
        try {
            byte[] btInput = s.getBytes();
            MessageDigest mdInst = MessageDigest.getInstance("MD5");
            mdInst.update(btInput);
            byte[] md = mdInst.digest();
            int j = md.length;
            char[] str = new char[j * 2];
            int k = 0;
            for (byte byte0 : md) {
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static Boolean compare(String password, String purpose) {
        return purpose.equals(encryption(password));
    }
}
